APA Edition Citation

Burrill, C. W., & Knudsen, J. R. (1969). Real variables.

Chicago Edition Citation

Burrill, Claude W., and John R. Knudsen. Real Variables. Holt, Rinehart & Winston Publishers, New York, 1969.

MLA Edition Citation

Burrill, Claude W., and John R. Knudsen. Real Variables. 1969.